基于完全吸收超材料的高增益微带天线

High-gain microstrip antenna based on perfect absorbing metanaterial

摘要: 通过将树枝状完全吸收超材料用于传统的微带贴片天线,利用完全吸收超材料对天线基板中传播的电磁表面波的吸收,减少天线表面波能量损耗,达到改善天线性能的目的。实验结果表明:加载树枝状完全吸收超材料的天线方向性增强,侧向辐射减弱,前向辐射增强,天线的增益提高了1.22dB.

Abstract: Applying the dendritic perfect absorbing metamaterial to the substrate of the conventional microstrip patch antenna, the electromagnetic surface wave could be well reduced, therefore, the performance of the antenna can be obviously improved. Numerical simulation and experiment demonstrate that the side radiation can be reduced and the forward radiation is increased.As a result, the gain of the antenna can be enhanced by 1.22dB.